US 11,994,174 B1
Clutch assembly
Markus Wiegandt, Cologne (DE); and Eduard Kinzel, Cologne (DE)
Assigned to GKN Automotive Limited, Birmingham (GB)
Appl. No. 18/552,939
Filed by GKN Auotmotive Limited, Birmingham (GB)
PCT Filed Mar. 30, 2021, PCT No. PCT/EP2021/058292
§ 371(c)(1), (2) Date Sep. 28, 2023,
PCT Pub. No. WO2022/207079, PCT Pub. Date Oct. 6, 2022.
Int. Cl. F16D 48/02 (2006.01); F16D 13/72 (2006.01); F16D 13/74 (2006.01)
CPC F16D 25/14 (2013.01) [F16D 13/72 (2013.01); F16D 13/74 (2013.01); F16D 48/02 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A clutch assembly for a driveline of a motor vehicle, comprising:
at least one controllable friction clutch for variable torque transmission between a clutch input part and a clutch output part;
a hydraulic actuator assembly for operating the friction clutch, the actuator assembly comprising a hydraulic pump, a hydraulic chamber hydraulically connected to the hydraulic pump and a return flow element with an orifice, via which hydraulic fluid can flow out of the hydraulic chamber into a housing reservoir, wherein the hydraulic fluid defines a filling level in the housing reservoir in an inactive state;
wherein an outlet opening of the return flow element is arranged below the filling level of the hydraulic fluid in the inactive state.